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Homework regarding pressure XD

  1. Apr 24, 2009 #1
    1. An underwater diver swims from the water surface P down to the seabed Q. He is cleaning the sea from unwanted object such as a box.

    a) What is the pressure at the water surface P??

    b) The box is 10m below the surface P and the density of the sea water is 1150kg/m(cubed). What is the pressure of the sea water on the top surface of the box?




    2. Well the only equation i know is Pressure = Force/Area



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Apr 24, 2009 #2

    tiny-tim

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    Welcome to PF!

    Hi Laura! Welcome to PF! :smile:
    Draw the box, with a column of water on top of it, stretching all the way to the surface …

    what is the weight of the column of water …

    so what is the force on the box …

    then use Pressure = Force/Area :wink:
     
  4. Apr 24, 2009 #3
    Re: Welcome to PF!


    Thanks alot =]:biggrin:
     
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